In geometry, a translation is the shifting of a figure from one place to another without rotating, reflecting or changing its size. This is done by moving the vertices of the figure the prescribed number of spaces on a coordinate plane and then drawing the new figure.
These PFDs are designed to keep the wearer in a vertical position, but it is the wearersâ responsibility to maneuver themselves into a face-up position. Type III PFDs will keep unconscious wearers face-up just as well as a Type II vest.
Classic (Grandiose) NPD and Classic (facing out) BPD seem to be somewhat clear to differentiate. When it comes to covert/vulnerable pwNPD and and the quiet borderline, the line where one classification ends and one begins seems to be blurry.